MINERALOGY OF INCLUSIONS IN CORUNDUM FROM THE MINE NO. 418, ILMEN STATE RESERVE, SOUTH URALS
Corundum crystals with rims of spinel and a wide spectrum of inclusions are studied from actinolite-mica veins in altered ultramafic rocks located among metaterrigenous rocks of the Ilmeny-Vishnevogorsk polymetamorphic complex. In total, 32 minerals are identified including amesite Mg2Al(AlSiO5)(OH)...
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| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
South Urals Federal Research Center of Mineralogy and Geoecology UB RAS
2018-09-01
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| Series: | Минералогия |
| Subjects: | |
| Online Access: | https://journal.mineralogy.ru/wp-content/uploads/2019/09/2018-3-3.pdf |
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| Summary: | Corundum crystals with rims of spinel and a wide spectrum of inclusions are studied from actinolite-mica veins in altered ultramafic rocks located among metaterrigenous rocks of the Ilmeny-Vishnevogorsk polymetamorphic complex. In total, 32 minerals are identified including amesite Mg2Al(AlSiO5)(OH)4 , baddeleyite ZrO2 , gersdorffite NiAsS, dissacisite-(Ce) (CaCe)(Al2Mg)(Si2O7)(SiO4)O(OH), and nickeline NiAs, which were found for the first time in the Ilmeny Mountains. The formation of various inclusions in corundum is related to the influence of high-Al fluid enriched in alkali elements, REEs, rare metals, and Ba during tectono-metamorphic activation of the complex. |
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| ISSN: | 2313-545X 2782-2044 |